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/*
* Copyright (C) 2011 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CrossfadeGeneratedImage_h
#define CrossfadeGeneratedImage_h
#include "platform/geometry/IntSize.h"
#include "platform/graphics/GeneratedImage.h"
#include "platform/graphics/Image.h"
#include "platform/graphics/ImageObserver.h"
#include "wtf/RefPtr.h"
namespace WebCore {
class CSSCrossfadeValue;
class PLATFORM_EXPORT CrossfadeGeneratedImage : public GeneratedImage {
public:
static PassRefPtr<CrossfadeGeneratedImage> create(Image* fromImage, Image* toImage, float percentage, IntSize crossfadeSize, const IntSize& size)
{
return adoptRef(new CrossfadeGeneratedImage(fromImage, toImage, percentage, crossfadeSize, size));
}
virtual void setContainerSize(const IntSize&) { }
virtual bool usesContainerSize() const { return false; }
virtual bool hasRelativeWidth() const { return false; }
virtual bool hasRelativeHeight() const { return false; }
virtual IntSize size() const { return m_crossfadeSize; }
protected:
virtual void draw(GraphicsContext*, const FloatRect&, const FloatRect&,
CompositeOperator, blink::WebBlendMode) OVERRIDE;
virtual void drawPattern(GraphicsContext*, const FloatRect&,
const FloatSize&, const FloatPoint&, CompositeOperator,
const FloatRect&, blink::WebBlendMode, const IntSize& repeatSpacing) OVERRIDE;
CrossfadeGeneratedImage(Image* fromImage, Image* toImage, float percentage, IntSize crossfadeSize, const IntSize&);
private:
void drawCrossfade(GraphicsContext*);
Image* m_fromImage;
Image* m_toImage;
float m_percentage;
IntSize m_crossfadeSize;
};
}
#endif
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